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December 7th, 2025 :: 11:23 pm CST   

Local Weather Report for
Decatur
Illinois, United States

 Current Decatur Weather Conditions Updated December 7th at 9:54 pm 
Overcast
Temperature:21°F Dew Point:18°F
Barometer:30.3 inHg Wind:N 24 Mph
Humidity:85.5% Visibility:0M
 
 Decatur Weather Forecast Summary  
 
Today
Dec 7th
Monday
Dec 8th
Tuesday
Dec 9th
Wednesday
Dec 10th
Thursday
Dec 11th
Cloudy Cloudy Cloudy Cloudy Mix of rain and snow
34°F
28°F
17°F
45°F
31°F
46°F
30°F
32°F
27°F
 
 Decatur Detailed Weather Forecast  
 
Monday, December 8th, 2025
Overnight Temperature: 18°F
Cloudy. Windy at times.
Morning Temperature: 24°F
A mix of cloud and sun. Windy at times.
Afternoon Temperature: 21°F
A mix of cloud and sun.
Evening Temperature: 25°F
Cloudy. Windy at times.
Tuesday, December 9th, 2025
Overnight Temperature: 31°F
Cloudy. Windy.
Morning Temperature: 37°F
Cloudy. Windy at times.
Afternoon Temperature: 38°F
Cloudy. Windy at times.
Evening Temperature: 44°F
Cloudy. Windy.
Wednesday, December 10th, 2025
Overnight Temperature: 46°F
Cloudy. Windy.
Morning Temperature: 39°F
Cloudy. Windy.
Afternoon Temperature: 31°F
Sunny. Windy at times.
Evening Temperature: 31°F
Cloudy.
Thursday, December 11th, 2025
Overnight Temperature: 28°F
Cloudy.
Morning Temperature: 31°F
Cloudy with flurries or showers likely. Windy at times.
Afternoon Temperature: 32°F
Cloudy with flurries likely.
Evening Temperature: 28°F
A mix of cloudy and clear skies. Windy at times.
Friday, December 12th, 2025
Overnight Temperature: 18°F
Cloudy. Windy at times.
Morning Temperature: 17°F
Cloudy. Windy.
Afternoon Temperature: 11°F
Cloudy. Windy.
Evening Temperature: 4°F
Cloudy. Windy.
Saturday, December 13th, 2025
Overnight Temperature: 1°F
Cloudy. Windy.
Morning Temperature: 8°F
Cloudy. Windy.
Afternoon Temperature: 9°F
Sunny. Windy at times.
Evening Temperature: 6°F
Cloudy.
Sunday, December 14th, 2025
Overnight Temperature: 9°F
Cloudy.
Morning Temperature: 16°F
Cloudy with flurries likely. Windy at times.
Afternoon Temperature: 18°F
Cloudy with a chance of flurries. Windy at times.
Evening Temperature: 21°F
Cloudy with a chance of flurries. Windy at times.
Monday, December 15th, 2025
Overnight Temperature: 15°F
Cloudy with flurries likely. Windy.
Morning Temperature: 15°F
Cloudy. Windy.
Afternoon Temperature: 16°F
Sunny with cloudy periods. Windy at times.
Evening Temperature: 8°F
Clear with cloudy periods.





 

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9:55 PM  23°F
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9:53 PM  21°F
Overcast

 
This WeatherCity Weather Forecast for Decatur, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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